Difference between revisions of "IoTGateway/BSP/Android/Gettingstarted/How to use CAN Bus"

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i.MX6 uses the internal FlexCAN(Flexible Controller Area Network) module implementing the CAN protocol according to the CAN 2.0B.
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=== Pin Define ===
 
=== Pin Define ===
  
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<tt>CAN0_D+&nbsp;</tt>connect to <tt>CAN1_D+</tt>
 
<tt>CAN0_D+&nbsp;</tt>connect to <tt>CAN1_D+</tt>
  
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<tt>CAN0_D-&nbsp;</tt>connect to <tt>CAN1_D-</tt><tt></tt><tt></tt>
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<tt>CAN0_D-&nbsp;</tt>connect to <tt>CAN1_D-</tt>
 
<pre># ip link set can0 up type can bitrate 125000
 
<pre># ip link set can0 up type can bitrate 125000
 
# ip link set can1 up type can bitrate 125000</pre>
 
# ip link set can1 up type can bitrate 125000</pre>
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<tt></tt>
 
−
==== <tt>Test</tt> ====
 
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<pre>#candump can0 &
 
  
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#cansend can1 -i 0x00 0x11 0x22 0x33 0x44 0x55 0x66 0x77 0x88</pre>
 
  
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CAN0 retrieves the data
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<pre>interface = can0, family = 29, type = 3, proto = 1
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==== Test ====
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can0 []
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*Test 1
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<pre># candump can1 &
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# cansend can0 12345678#123412341234
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</pre>
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 +
The following shows the result
 +
<pre>can1  12345678  [6] 12 34 12 34 12 34
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</pre>
 +
 
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*Test 2
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<pre># cansend can0 133#ababdede
 
</pre>
 
</pre>
  
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=== ===
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The following shows the result
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<pre>can1      133  [4] AB AB DE DE
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</pre>

Latest revision as of 08:18, 3 February 2017

i.MX6 uses the internal FlexCAN(Flexible Controller Area Network) module implementing the CAN protocol according to the CAN 2.0B.

Pin Define

ROM-3420

CAN0(CAN bus 0) CAN1(CAN bus 1)
 Pin  Signal  Pin Signal
 1  -  2  -
 3  CAN0_D-  4  -
 5  CAN0_D+  6  -
 7  -   8  -
 9  GND  10  -

 ROM-7421

CAN0(CAN bus 0)
 Pin  Signal  Pin  Signal
 1  -  2  CAN0_D-
 3
 4  -
 5  GND
  6  GND
 7  CAN0_D+   8  -
 9    10  -


Configuration/Test

Configuration

Connect CAN0 to CAN1

CAN0_D+ connect to CAN1_D+

CAN0_D- connect to CAN1_D- 

# ip link set can0 up type can bitrate 125000
# ip link set can1 up type can bitrate 125000


Test

  • Test 1
# candump can1 &
# cansend can0 12345678#123412341234

The following shows the result 

can1  12345678   [6]  12 34 12 34 12 34
  • Test 2
# cansend can0 133#ababdede

The following shows the result 

can1       133   [4]  AB AB DE DE
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